08-13-2021 09:28 PM
I turn on the camera, everything works, all the buttons, dials, focus, etc. As soon as I take a shot, the camera shows the image in the screen, then everything shuts down - all the buttons, dials - focus still works, but I can't shoot. I have to take the battery out and put it back in then I can take one more shot.
The problem started yesterday while using a Sunpak DigiFlash 3000 - I assume this is related to the camera problem.
The problem persists whether I am trying to use the flash or not. All settings reset to default. Flash disabled. Still doesn't work.
08-14-2021 03:06 AM
Obviously the camera could simply be broken, but it does sound a bit like the battery is knackered. Lithium batteries will eventually wear out, so that even when fully charged, they don't have enough capacity left to do anything useful. Or in your case, grab just one shot. The flash may be a coinidence.
So maybe try a new battery?
08-14-2021 11:21 AM
Don't think it's the battery. I've tried 2 different batteries, both new, both fully charged. Same problem regardless of battery.
I still think it's related to the flash, the instructions for the flash (which I now can't find) said something about the importance of turning the flash on only after the camera is on, and turning it off before the camera is turned off. I think my camera my have shut off with the flash still on, or maybe I even did that.
08-14-2021 01:27 PM
If the flash is still attached, remove it. Do the issues persist? Also, try resetting the camera and try again.
As stated above, the camera may now be broken.
The flash you have is incredibly inexpensive. But to me, that's a warning sign that sub-par components are being used. I do wonder if it has damaged your camera in some way.
08-14-2021 06:44 PM - edited 08-14-2021 06:44 PM
I tried to look and see what voltage the Mk III can withstand on the flash contact, but couldn't find it. Cheap/older flashes can put hundreds of volts on the sync terminal. Some cameras can't handle that much voltage. Generally "pro" models can withstand it.
08-14-2021 07:15 PM - edited 08-14-2021 07:21 PM
I have not seen any Canon specs on what the sync terminal on the hot shoe is rated for but the PC sync terminal is rated to only 250 volts on the 1 and 5 series and I suspect that applies to the hot shoe also. A failing flash that exposes the sync or communications lines to the Xeon tube firing voltage can easily cause damage to the camera.
I owned a Sunpak flash a LONG time ago with a Canon AE-1 and it was a decent and well made unit. The 3000 doesn't seem to fit that category.
Does the camera not show any error message when it locks up?
08-15-2021 01:02 PM
No error message, camera just shuts down.
08-31-2021 05:52 PM
If anyone is interested in how this story ends - I know I am - here it is.
Drove 3 hours to the repair shop. Lady at the counter tries it out - it works. I try it out - it works. Driving home 3 hours I realize that I took the CF card out before taking it to the shop. After trying several combinations of card selections (CF, SD, CF & SD, RAW, JPG) it seems related to the CF card, but can't replicate the problem reliably. Now the camera works most of the time, refuses to work at others. It's an improvement.
08-31-2021 06:57 PM
Look into the CF card slot and see if there are any bent pins.
Did you try more than one CF card?
08-31-2021 07:31 PM
CF card pins are far too easy to bend, especially if you fall prey to one of the very common counterfeit knockoff cards. There is very little room for error and a card slightly out of tolerance will easily result in a bent pin.
I primarily use the SD card slot in my 5DS and 5DS R bodies with the CF card only in use on the rare occasions where I want the redundancy of having the RAW files recorded to both cards. My 1DX, 1DX II, and 1DX III files are transferred to my workstation via their fast ethernet port which is a mechanically reliable connector and their cards stay in place.
05/18/2023: New firmware updates are available.
EOS Rebel T100 - Version 1.1.0
EOS 5D Mark IV - Version 1.4.0
EOS 6D Mark II - Version 1.2.0
PowerShot Elph 360HS - Version 18.104.22.168
PowerShot SX420 IS - Version 22.214.171.124
PowerShot 620 HS - Version 126.96.36.199
PowerShot SX720 HS - Version 188.8.131.52
PowerShot G1X Mark III - Version 184.108.40.206
PowerShot G7X Mark II - Version 220.127.116.11
PowerShot G9X Mark II - Version 18.104.22.168
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
EOS 1DX Mark III- Version 1.7.1
Speedlite EL-1 - Version 1.0.2
03/30/2023: Product Advisory for EF50 F1.2 L USM
03/30/2023: Product Advisory for EOS R10
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.